CN1141200C - Non-corrosive solder for soldering stainless iron and aluminium - Google Patents
Non-corrosive solder for soldering stainless iron and aluminium Download PDFInfo
- Publication number
- CN1141200C CN1141200C CNB011278358A CN01127835A CN1141200C CN 1141200 C CN1141200 C CN 1141200C CN B011278358 A CNB011278358 A CN B011278358A CN 01127835 A CN01127835 A CN 01127835A CN 1141200 C CN1141200 C CN 1141200C
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- aluminium
- fluoride
- stainless iron
- soldering
- eutectic
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Abstract
The present invention relates to a soldering agent for metal soldering, which has the following components by weight percentage: 95.0 to 97.5% of eutectic crystals of potassium aluminate tetrafluoride and potassium aluminate hexafluoride (KALF4 and K3ALF6), 1.5 to 4.0 % of zinc fluoride, 0.2 to 0.5 % of copper fluoride, 0.6 to 1.5% of tin fluoride and 0.1 to 0.5 % of cadmium fluoride. The present invention is used for the soldering of stainless iron and aluminium.
Description
Technical field
The present invention relates to a kind of solder bonding metal brazing flux, particularly a kind of different metal solder without corrosive brazing flux.
Background technology
Gong Ying stainless steel-aluminium soldering in the market all is ptfe aluminum potassium and potassium hexafluoroaluminate (KAlF with brazing flux
4With K
3AlF
6) eutectic, it is successful being used for stainless steel-aluminium composite brazing, the soldering qualification rate is greater than 99.9%.But this brazing flux is unsuitable for the welding of stainless iron-aluminium.To use potassium fluoroaluminate eutectic brazing flux, silicon-aluminium eutectic solder to be example, the hot strength of the stainless iron-aluminium of its welding is lower.The soldering qualification rate is very low, has only about 60%, can not be used for the suitability for industrialized production of the sector.
Summary of the invention
The purpose of this invention is to provide a kind of non-corrosive solder for soldering stainless iron and aluminium.
Stainless iron-aluminium soldering of the present invention in weight percent, comprises following component with brazing flux: ptfe aluminum potassium and potassium hexafluoroaluminate eutectic 95.0～97.5, zinc fluoride 1.5～4.0, copper fluoride 0.2～0.5, tin fluoride 0.6～15.
Also comprise cadmium fluoride 0.1～0.5.
By mixing, ball milling to 200 purpose powder promptly can be made into stainless iron-aluminium soldering brazing flux of the present invention with above component.During welding, these add element and are cemented out and form alloy by aluminium, iron.This displacement, alloying process " liquefaction " surface of welding work pieces, improved the combination degree of solder and workpiece.
According to the GB11363-89 detection method, the ultimate tensile strength that records with potassium fluoroaluminate eutectic welding stainless iron-aluminium is 25N/mm
2Ultimate tensile strength with non-corrosive solder for soldering stainless iron and aluminium welding stainless iron-aluminium of the present invention is up to 48N/mm
2
Under the same process condition, use is with a kind of solder silicon-aluminium eutectic thing, use potassium fluoroaluminate eutectic brazing flux and non-corrosive solder for soldering stainless iron and aluminium weld diameter of the present invention to do contrast (the soldering sample number is 350) as stainless iron-aluminium-stainless steel tableware of 200mm, by weld strength and composite bed stability experiment, find that product percent of pass differs greatly.Use potassium fluoroaluminate eutectic brazing flux, product percent of pass is about 60%, uses stainless iron-aluminium soldering brazing flux of the present invention, and product percent of pass is greater than 99%.
Embodiment one
Percentage is got potassium fluoroaluminate eutectic 95.0%, zinc fluoride 3.0%, copper fluoride 0.5%, tin fluoride 1.5% by weight, mixes the back and is milled to 200 orders at the ball mill endosphere.Recording ultimate tensile strength is 29N/mm
2
Embodiment two
With embodiment one.Get potassium fluoroaluminate eutectic 95.0%, zinc fluoride 4.0%, copper fluoride 0.2%, tin fluoride 0.8%.Recording ultimate tensile strength is 32N/mm
2
Embodiment three
With embodiment one.Get potassium fluoroaluminate eutectic 97.5%, zinc fluoride 1.2%, copper fluoride 0.4%, tin fluoride 0.6%, cadmium fluoride 0.3%.Recording ultimate tensile strength is 48N/mm
2
Claims (2)
1. stainless iron-aluminium soldering brazing flux is characterized in that in weight percent, comprises ptfe aluminum potassium and potassium hexafluoroaluminate eutectic 95.0～97.5, zinc fluoride 1.5～4.0, copper fluoride 0.2～0.5, tin fluoride 0.6～1.5.
2. stainless iron-aluminium soldering brazing flux according to claim 1 is characterized in that also comprising cadmium fluoride 0.1～0.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011278358A CN1141200C (en) | 2001-09-10 | 2001-09-10 | Non-corrosive solder for soldering stainless iron and aluminium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011278358A CN1141200C (en) | 2001-09-10 | 2001-09-10 | Non-corrosive solder for soldering stainless iron and aluminium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1337296A CN1337296A (en) | 2002-02-27 |
| CN1141200C true CN1141200C (en) | 2004-03-10 |
Family
ID=4667745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011278358A Expired - Fee Related CN1141200C (en) | 2001-09-10 | 2001-09-10 | Non-corrosive solder for soldering stainless iron and aluminium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1141200C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4248433B2 (en) * | 2003-04-08 | 2009-04-02 | 株式会社デンソー | Method for brazing Mg-containing aluminum alloy material |
| WO2004113014A2 (en) * | 2003-06-25 | 2004-12-29 | Behr Gmbh & Co. Kg | Fluxing agent for soldering metal components |
| CN1297368C (en) * | 2004-12-29 | 2007-01-31 | 广州有色金属研究院 | Non-corrosive solder for stainless iron and aluminium high efficiency induction pressure blaze welding |
| CN100462187C (en) * | 2005-06-03 | 2009-02-18 | 厦门灿坤实业股份有限公司 | Hard soldering powder for aluminium soldering in air furnace |
| CN100463764C (en) * | 2006-01-19 | 2009-02-25 | 李昕 | Not corrosive soldering flux in use for high frequency induced pressure braze welding |
| CN100496868C (en) * | 2007-09-21 | 2009-06-10 | 江苏科技大学 | Novel non-corrosion fluoride solder and preparation method |
| CN103603002A (en) * | 2013-11-14 | 2014-02-26 | 北京航空航天大学 | Surface film removing agent capable of realizing zero-defect direct-current positive polarity welding of 6XXX-series aluminum alloy |
-
2001
- 2001-09-10 CN CNB011278358A patent/CN1141200C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1337296A (en) | 2002-02-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040310 Termination date: 20100910 |